multiplicity

Short definition from Wiktionary

Noun

1. 1
   The state of being made of multiple diverse elements.
2. 2
   A large indeterminate number.
3. 3
   The number of values for which a given condition holds.
4. 4
   The number of instances that can occur on a given end of a relationship.
5. 5
   The number of microstates associated with a given macrostate.
6. 6
   The condition whereby a person displays or experiences multiple distinct personalities or selves in one body.